Creating delicious Sweet & Sour Meatballs is straightforward when you follow these steps:

1. Preheat the Oven: Begin by preheating your oven to 400°F (200°C).
2. Mix the Meatball Ingredients: In a large bowl, combine ground beef, breadcrumbs, egg, Worcestershire sauce, garlic powder, onion powder, salt, and black pepper. Mix until just combined.
3. Shape the Meatballs: Form the mixture into meatballs, about 1 inch in diameter, and place them on a baking sheet.
4. Bake the Meatballs: Bake in the preheated oven for 20 minutes, or until cooked through and browned.
5. Prepare the Sauce: In a saucepan, combine pineapple chunks with juice, ketchup, apple cider vinegar, brown sugar, and soy sauce. Heat the mixture over medium heat until it starts to simmer.
6. Add Bell Peppers: Stir in the chopped bell peppers, allowing them to soften slightly in the sauce.
7. Combine Meatballs with Sauce: Once the meatballs are baked, transfer them into the saucepan with the sauce. Coat them well and let simmer for 5-10 minutes.
8. Adjust Seasoning: Taste the sauce, adjusting sweetness or tanginess as desired.
9. Serve: Once the meatballs are well-coated and heated through, they are ready to enjoy!

These steps ensure that your Sweet & Sour Meatballs come out perfectly every time.